Improved nut-tapping- machine



j W. SOUL-LY.

Screw Tapping.

Patented Aug.y 9, 1870'.

IILU

NJETERS. PnoTo-Lnuockrni stent (attire.

`IGAN ABOLT AND 'NUT COMPANY,l OF SAME PLAGE.

Letters Patent No. 106,215, dated August 9, 1870.

IMPRovED NUT-TAPPING MACHINE.

The Schedule referred to in these Lettera Patent and making part of `111e sme To whom it may concern: y Bc it known that I, WILLIAM Sooner, ot' Detroit, in the count-y of Wayne andtate ofv Michigan, have -invented a new and useful Improvementin Gang Nut-1 Tapping Machines; and I do declare that the following is arfnll and accurate description thereof, reference being hadV to the accompanying drawing and to the letters of reference marked thereon and being a part of this specification, in which- Figure l is a perspective view ot' my device;

Figure 2 is a plan of the same; and

Figure 3 is a plan of one of the nut-holders.

Like letters indicate like parts ineach figure.

The nature of this invention relates to the construction of' a machine f'or tapping the. threads in screw- Qnuts.`

Itconsists in thcpeculiarconstruction and arrangemeutof a series of rotating spindles, carrying each a conical tap having a long shank, all having a continuous rotation in thel same direction, and in a novel construction and nmethod ot' operating a corresponi'ling series of nut-holders, by means oi' which a series ot' nuts may be operated upon sinmitaneously, the attendant placing the blanks consecutively in the nutholders, when the process ot' threading them is immediately commenced, and carried on with great Also, ina peculiar arrangenient ofa lubricating device, whereby a steady supply of oil is delivered on the. taps just in advance'ot the nuts being threadl ed.

A `represents a Vsuitable 1netallic` table, supported by legs or standards, d, and provided with a surrounding ledgc, l), for `saving the oil which drips from the taps.

B is a vbox projecting from the rear part of the table, in which is jouri'ialed a driving-shaft, O, rotated iiom any convenient source of power, and carrying a toothed gear-wheel, D.

E, El, and Ezlare boxes in the upper part of three` standards rising from the back. part of the table.

, In these boxes are journaled socket-spindles, F, F1,

` and F2, lmvingpinions, G, G, and G2, rigidly secured to their rear ends.

Motion is connnuuieated to the gears GrV and Griin the same direct/ion bythe gear-wheel D, which meshes with each, and motion is in like manner` given the pinion Gr2 ti'omGrl by an intermediate gear, H, rotatthe purpose set forth.

the chips of metal fall at the insertion of each fresh blank.

M are coiled springs secured to a bar extending .across the face of the (machine, and are otlsuch length as to press the nut-holders, against which. they bear, up to and on the taps N. i

Ov is a reservoir 'fpr containing oil or other ylubricant, from the lower part of which issue three pipes, d, which may be provided with suitable cocks to regulate the out-flow of the oil.

`From these pipes flexible tubes, P, are led to each nut-holder, and so secured thereto by a clamp, e, as to deliver a small but continual supply of' oil to` the tap in front of each nut.

The operation of the device is simple. As soon as ablank is tapped and run olf the threadof thetap onto t-lie shank, the holder is drawn back and a fresh blank dropped into the recess, the spring forces the holder forward to the tap, which, being tapered, enters lthe hole. in the blank and at once commences cutting the thread. The blanks are supplied tothe' holders in. rotation, and as soon asl-the entire shank Vwhen a fresh blank is placed in it, until the tap engages with the blank 'and commences cut-ting the thread.

I do not intend to limit the number of taps in a machine to three, as shown, as four or more, in threading large nuts, may be used, the limit of the number used being only the capacity of the attendant to'place the blanks and remove the finished nuts from. the

machine.

What I claim as my invention, and desire to secure by Leiters Patent, is- Y 1. Tile nut-holders L, constructed and arranged as Adescribed and shown, and as and for the purposes set forth.

2. The arrangement ot' the standard J, guide-bars K, uut-holders L, and springs M, when the several parts are constructed and arranged as described and' shown, and as and for the purposessct forth.

3. The construction and arrangement ofia'series ot'nut-holders L, `moving independently of each otherV between the guide-bars K, reservoir O,aud flexible tubes I, in connection with a corresponding` seriesot' taps N, continuously rotated in the same direction by any suitable train ot gearing, in the' manner and for WILLIAM .SGU-LILY.

Witnesses: l y

SAML. J. SPRAY, g FREDERICK EBI-mms. 

